To determine the heating and cooling curve of water Design: What we are going to do is investigate the phase changes and what the heating curve of water is. We are going to do this is by heating up 100ml of water on a Bunsen burner then adding ice cubes. Use a thermometer to measure the temperature every 30 seconds until it reaches a plateau. Hypothesis: As more time passes‚ the temperature of the water increases. Independent variable: Time Dependent variable: Changing water temperature
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6. Applications * Is it possible to add heat to a body without changing its temperature? Yes. It is possible to add energy to a body (in the form of heat) and not raise its temperature by causing a phase change. When you heat ice it takes energy to convert it from ice to water‚ but does not change the temperature of the body until it is all converted. The principle behind this is what we call latent heat. It refers to the energy (or heat) required to change the state of a substance without changing
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velocity of the stopper will increase as the radius is shortened. Rubber stopper with a hole PVC tube or wooden spool 1. Measure the mass f the stopper and washer‚ m‚ and record it in the data and observations section. Then‚ prepare the experimental apparatus as shown in figure A. 2. Throughout this experiment‚ you will need to maintain a constant radius of uniform circular motion while ensuring that all of the centripetal force is provided by the clamp and measured on the spring scale
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Measurements and Error Analysis‚ #1‚ Chris Baca Discussion of differences The purpose of this experiment is to understand why we have variances in measurements and how to reduce the variances. When taking a measurement there are multiple factors that affect its value. The more the measurement is taken the measurements average is closer to the actual value. Other factors include the instruments calibration‚ cleanliness of the inside of the measuring arms and human error in reading the measurements
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Evaluation of a Method to Reduce Over-the-Counter Medication Dosing Error Marion Grady 3/9/2010 What is the purpose of the article? The purpose of the article was to find a simple way of dosing over was a reduction in errors in the home dosing. What are the overall research questions? Research questions include dose determination and dose measurement percentage. The clinical trial randomly assigned color coded or conventional assignments to care givers.
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Please refer to the text or simply ask me for help if you need more explanation of the common errors described here. Punctuation Problems When you have a series of items‚ you must use a comma before the ‘and’ or the ‘or.’ When you use ‘however’ within a sentence‚ you must have a comma on either side of the word. Or‚ you could have no commas at all. But‚ you cannot use just one comma unless ‘However’ is the first word in the sentence. Introductory subordinate clauses need a comma to set them off
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starts to cause her psychological turmoil. For Shakespeare to use a woman as a secondary character also for her to have such a predominant and effective voice in the play to a platform unusually prevalent for a women at the time. In The Comedy of Errors we are introduced to Adriana and Luciana‚ these are the only female characters in the play. The women have little influence to what actually happens in the play; however they demonstrate more sensitivity and complexity than all of the males in the
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basketball confrontation of focus. At present‚ the domestic and international factors affect the basketball shooting‚ mainly for heart‚ Management and technical action‚ and take full advantage of the principles of mechanics to study less. From the physics point of view‚ using principles of mechanics and impact analysis‚ The Hit Rate factors‚ in order to explore an effective way to improve the shooting‚ in order to improve the rational knowledge of the athletes on the shooting process‚ guidance basket
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Blood Pressure Experimental Design By All First Period PBS 1. Problem o Does blood pressure change when you are active? 2. Hypothesis o Blood pressure will increase when physical activity increases. o independent variable is the the stressor or physical activity and the dependant variable is the blood pressure measurement. 3. Materials o Sphygmomanometer o Lab Journal o Computer o Pencil o Paper 4. Steps 1. Wrap the
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Since the birth of Physical Review Letters fifty years ago‚ condensed matter physics has seen considerable growth‚ and both the journal and the field have flourished during this period. In this essay‚ I begin with some general comments about condensed matter physics and then give some personal views on the conceptual development of the field and list some highlights. The focus is mostly on theoretical developments. DOI: 10.1103/PhysRevLett.101.250001 PACS numbers: 01.30.−y The transistor
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